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Round|Lab Grown|IGI

1.68ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG812621483

Shape and cutting style on the report: Round brilliant

Certificate IGI LG812621483

Diamond specifications and retailer prices

From £299 GBP
$400 USD
As of October 30, 2026
Save £1,784 GBP (86%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £2,082 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.68ct lab-grown round diamond

This 1.68ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG812621483 or 812621483. Listed at 26 retailers as of October 30, 2026, with prices from £299 to £2,082, a £1,784 spread on the same certified stone. Brilliant Earth lists it at £2,082. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.68
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812621483
Dimensions7.63 × 7.69 × 4.74 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.63 mm7.69 mm1.68 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812621483
Side View
Table 56.0%Crown 34.9°Girdle: THN-MEDPavilion 41.1°Culet: NoneDepth 61.9%

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 30
Current: £2,082 GBP|Low: £299 GBP|High: £2,411 GBP|Avg: £920 GBP|-13.6%
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
Retailer 17
November 1, 2026
Retailer 5£299 GBP
Retailer 11£466 GBP
Retailer 16£466 GBP
Retailer 13£534 GBP
Retailer 15£569 GBP
Retailer 8£582 GBP
Retailer 10£590 GBP
Retailer 6£755 GBP
Retailer 14£768 GBP
Retailer 12£817 GBP
Retailer 3£875 GBP
Retailer 7£1,095 GBP
Retailer 4£1,250 GBP
Retailer 17£1,266 GBP
Retailer 2£1,294 GBP
Retailer 9£1,825 GBP
Brilliant Earth£2,082 GBP

34 data points across 17 retailers

26 retailers£299 GBP to £2,082 GBP

Retailer 1
-
£271 GBP
$363 USD
Price last confirmed 22 days ago
Retailer 2
-
£282 GBP
$378 USD
View
Price last confirmed 40 days ago
A
Retailer 3
-
£299 GBP
$400 USD
View
Final sale: no returns
Retailer 4
-
£316 GBP
$423 USD
View
Price last confirmed 40 days ago
Retailer 5
-
£336 GBP
$450 USD
View
Price last confirmed 20 days ago
Retailer 6
-
£336 GBP
$450 USD
View
Price last confirmed 30 days ago
Retailer 7
-
£346 GBP
$463 USD
View
Price last confirmed 37 days ago
A
Retailer 8
-
£466 GBP
$625 USD
View
A
Retailer 9
-
£466 GBP
$625 USD
View
A
Retailer 10
-
£534 GBP
€682 EUR
View
A
Retailer 11
-
£569 GBP
ZAR 12,313 ZAR
View
A
Retailer 12
-
£582 GBP
$780 USD
View
A
Retailer 13
-
£590 GBP
View
A
Retailer 14
-
£755 GBP
$1,012 USD
View
A
Retailer 15
-
£768 GBP
A$1,584 AUD
View
A
Retailer 16
-
£817 GBP
$1,095 USD
View
B+
Retailer 17
-
£875 GBP
$1,173 USD
View
Retailer 18
-
£1,079 GBP
$1,446 USD
View
Price last confirmed 24 days ago
B+
Retailer 19
-
£1,095 GBP
$1,467 USD
View
Retailer 20
-
£1,125 GBP
$1,507 USD
View
Price last confirmed 35 days ago
B+
Retailer 21
-
£1,150 GBP
$1,541 USD
View
B+
Retailer 22
-
£1,250 GBP
$1,675 USD
View
B+
Retailer 23
-
£1,266 GBP
$1,697 USD
View
B+
Retailer 24
-
£1,294 GBP
View
Retailer 25
-
£1,825 GBP
$2,445 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Brilliant Earth
20681003A · Oct 31
£2,082 GBP
$2,790 USD
View
25 more retailers have this diamond
Prices start from £299 GBPSave up to £1,784 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
1.68ct Round
£299 GBP