Round|Lab Grown|IGI

3.50ct D VS1 Round Lab Grown Diamond

ID • D/VS1 • IGI LG799616678

Shape and cutting style on the report: Round brilliant

Certificate IGI LG799616678

Diamond specifications and retailer prices

From £505 GBP
$673 USD
As of October 26, 2026
Save £1,966 GBP (80%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,906 GBP at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 3.5ct lab-grown round diamond

This 3.5ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG799616678 or 799616678. Listed at 21 retailers as of October 26, 2026, with a 389% 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

3.50
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799616678
Dimensions9.80 × 9.76 × 5.95 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.80 mm9.76 mm3.50 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799616678
Side View
Table 58.0%Crown 34.3°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: £2,906 GBP|Low: £489 GBP|High: £2,936 GBP|Avg: £1,219 GBP|-0.8%
Rare Carat
Retailer 2
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Retailer 5
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Retailer 11
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Retailer 21
October 27, 2026
Retailer 5£505 GBP
Retailer 19£550 GBP
Retailer 10£565 GBP
Retailer 3£586 GBP
Retailer 4£586 GBP
Retailer 21£806 GBP
Retailer 7£884 GBP
Retailer 13£929 GBP
Retailer 16£946 GBP
Retailer 11£954 GBP
Retailer 2£1,020 GBP
Retailer 18£1,331 GBP
Retailer 17£1,348 GBP
Retailer 8£1,353 GBP
Retailer 20£1,497 GBP
Retailer 6£1,647 GBP
Retailer 14£1,998 GBP
Retailer 9£2,021 GBP
Retailer 12£2,029 GBP
Retailer 15£2,471 GBP
Rare Carat£2,906 GBP

41 data points across 21 retailers

21 retailers£505 GBP to £2,471 GBP

A
Cheapest Retailer
-
£505 GBP
$673 USD
A
Retailer 2
-
£550 GBP
$732 USD
View
A
Retailer 3
-
£565 GBP
$753 USD
View
Final sale: no returns
A
Retailer 4
-
£586 GBP
$780 USD
View
A
Retailer 5
-
£586 GBP
$780 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
£806 GBP
View
Price last confirmed 12 days ago
A
Retailer 7
-
£884 GBP
$1,177 USD
View
A
Retailer 8
-
£929 GBP
View
B+
Retailer 9
-
£946 GBP
$1,260 USD
View
A
Retailer 10
-
£954 GBP
$1,271 USD
View
B+
Retailer 11
-
£1,020 GBP
€1,294 EUR
View
B+
Retailer 12
-
£1,331 GBP
A$2,726 AUD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
£1,348 GBP
ZAR 28,990 ZAR
View
B+
Retailer 14
-
£1,353 GBP
$1,802 USD
View
B+
Retailer 15
-
£1,497 GBP
$1,993 USD
View
B+
Retailer 16
-
£1,647 GBP
$2,193 USD
View
B
Retailer 17
-
£1,998 GBP
$2,661 USD
View
B
Retailer 18
-
£2,021 GBP
$2,691 USD
View
B
Retailer 19
-
£2,029 GBP
$2,701 USD
View
B
Retailer 20
-
£2,471 GBP
View
Most Expensive
B
Rare Carat
950085 · Oct 18
£2,906 GBP
$3,870 USD
View
Price last confirmed 11 days ago
20 more retailers have this diamond
Prices start from £505 GBPSave up to £1,966 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
3.50ct Round
£505 GBP