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Round|Lab Grown|IGI

3.40ct D VVS1 Round Lab Grown Diamond

ID • D/VVS1 • IGI LG728538775

Shape and cutting style on the report: Round brilliant

Certificate IGI LG728538775

Diamond specifications and retailer prices

From £731 GBP
$973 USD
As of October 29, 2026
Save £2,040 GBP (74%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: £8,651 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.4ct lab-grown round diamond

This 3.4ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG728538775 or 728538775. Listed at 31 retailers as of October 28, 2026, with a 279% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.40
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728538775
Dimensions9.60 × 9.63 × 5.98 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.60 mm9.63 mm3.40 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728538775
Side View
Table 56.0%Crown 34.4°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £8,651 GBP|Low: £704 GBP|High: £8,651 GBP|Avg: £2,144 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 29, 2026
Retailer 11£797 GBP
Retailer 8£961 GBP
Retailer 4£1,104 GBP
Retailer 12£1,104 GBP
Retailer 2£1,115 GBP
Retailer 10£1,174 GBP
Retailer 5£1,551 GBP
Retailer 14£1,648 GBP
Retailer 16£1,680 GBP
Retailer 9£1,696 GBP
Retailer 6£2,286 GBP
Retailer 7£2,590 GBP
Retailer 13£2,743 GBP
Retailer 3£3,028 GBP
Retailer 15£3,668 GBP
Brilliant Earth£8,651 GBP

37 data points across 16 retailers

31 retailers£731 GBP to £2,770 GBP

A
Retailer 1
-
£630 GBP
$839 USD
Price last confirmed 30 days ago
A
Retailer 2
-
£686 GBP
$913 USD
View
Price last confirmed 36 days ago
A
Retailer 3
-
£686 GBP
$913 USD
View
Price last confirmed 23 days ago
A
Retailer 4
-
£721 GBP
$960 USD
View
Price last confirmed 29 days ago
A
Retailer 5
-
£731 GBP
$973 USD
View
Price last confirmed 19 days ago
A
Retailer 6
-
£731 GBP
$973 USD
View
Price last confirmed 27 days ago
A
Retailer 7
-
£731 GBP
$973 USD
View
A
Retailer 8
-
£797 GBP
$1,062 USD
View
Final sale: no returns
A
Retailer 9
-
£894 GBP
HK$9,300 HKD
View
A
Retailer 10
-
£961 GBP
$1,280 USD
View
A
Retailer 11
-
£1,104 GBP
$1,470 USD
View
A
Retailer 12
-
£1,104 GBP
$1,470 USD
View
A
Retailer 13
-
£1,115 GBP
View
A
Retailer 14
-
£1,174 GBP
€1,489 EUR
View
B+
Retailer 15
-
£1,551 GBP
A$3,178 AUD
View
B+
Retailer 16
-
£1,648 GBP
A$3,377 AUD
View
Price last confirmed 8 days ago
B+
Retailer 17
-
£1,680 GBP
$2,237 USD
View
B+
Retailer 18
-
£1,696 GBP
ZAR 36,495 ZAR
View
B+
Retailer 19
-
£1,845 GBP
$2,457 USD
View
B+
Retailer 20
-
£1,876 GBP
$2,498 USD
View
B+
Retailer 21
-
£2,054 GBP
$2,735 USD
View
Price last confirmed 29 days ago
B+
Retailer 22
-
£2,054 GBP
$2,735 USD
View
Price last confirmed 19 days ago
B
Retailer 23
-
£2,286 GBP
$3,044 USD
View
B
Retailer 24
-
£2,427 GBP
$3,232 USD
View
B
Retailer 25
-
£2,532 GBP
$3,371 USD
View
B
Retailer 26
-
£2,590 GBP
SGD 4,660 SGD
View
B+
Retailer 27
-
£2,743 GBP
View
B
Retailer 28
-
£2,770 GBP
$3,689 USD
View
B+
Retailer 29
-
£3,028 GBP
A$6,204 AUD
View
Price last confirmed 21 days ago
B
Retailer 30
-
£3,668 GBP
$4,885 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
15743624A · Oct 29
£8,651 GBP
$11,520 USD
View
Price under review
30 more retailers have this diamond
Prices start from £731 GBPSave up to £2,040 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.40ct Round
£731 GBP