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Oval|Lab Grown|IGI

3.66ct H VS1 Oval Lab Grown Diamond

GD • H/VS1 • IGI LG566303974

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG566303974

Diamond specifications and retailer prices

From £672 GBP
$902 USD
As of November 1, 2026
Save £1,459 GBP (68%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,131 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.66ct lab-grown oval diamond

This 3.66ct lab-grown oval sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG566303974 or 566303974. Listed at 15 retailers as of October 31, 2026, with prices from £672 to £2,131, a £1,459 spread on the same certified stone. Brilliant Earth lists it at £2,131. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.66
Carat
H
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG566303974
Dimensions12.36 × 8.80 × 5.47 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
12.36 mm8.80 mm3.66 ctH / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG566303974
Side View
Table 60.0%Crown 34.5°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 62.2%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,131 GBP|Low: £267 GBP|High: £2,191 GBP|Avg: £1,008 GBP|-2.7%
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
November 1, 2026
Retailer 4£373 GBP
Retailer 5£414 GBP
Retailer 8£586 GBP
Retailer 16£672 GBP
Retailer 12£674 GBP
Retailer 9£677 GBP
Retailer 15£725 GBP
Retailer 10£906 GBP
Retailer 11£932 GBP
Retailer 14£995 GBP
Retailer 6£1,124 GBP
Retailer 13£1,154 GBP
Retailer 3£1,402 GBP
Retailer 2£1,577 GBP
Retailer 7£1,869 GBP
Brilliant Earth£2,131 GBP

29 data points across 16 retailers

15 retailers£672 GBP to £2,131 GBP

Retailer 1
-
£334 GBP
$448 USD
Price last confirmed 40 days ago
Retailer 2
-
£374 GBP
$502 USD
View
Price last confirmed 37 days ago
Retailer 3
-
£408 GBP
$548 USD
View
Price last confirmed 36 days ago
B
Retailer 4
-
£672 GBP
$902 USD
View
B+
Retailer 5
-
£674 GBP
$905 USD
View
B+
Retailer 6
-
£677 GBP
€865 EUR
View
B+
Retailer 7
-
£725 GBP
$973 USD
View
B+
Retailer 8
-
£906 GBP
A$1,871 AUD
View
B+
Retailer 9
-
£932 GBP
ZAR 20,197 ZAR
View
B+
Retailer 10
-
£995 GBP
$1,335 USD
View
B+
Retailer 11
-
£1,154 GBP
$1,548 USD
View
Retailer 12
-
£1,330 GBP
$1,785 USD
View
Price last confirmed 35 days ago
B
Retailer 13
-
£1,402 GBP
$1,882 USD
View
B
Retailer 14
-
£1,577 GBP
View
Most Expensive
B
Brilliant Earth
7630167A · Oct 31
£2,131 GBP
$2,860 USD
View
14 more retailers have this diamond
Prices start from £672 GBPSave up to £1,459 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.

B+
3.66ct Oval
£672 GBP