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Round|Lab Grown|IGI

3.70ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG636426679

Shape and cutting style on the report: Round brilliant

Certificate IGI LG636426679

Diamond specifications and retailer prices

From £1,119 GBP
CA$2,082 CAD
As of October 30, 2026
Save £361 GBP (24%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,722 GBP at Rare Carat · As of July 27, 2026
View at Rare Carat

About this 3.7ct lab-grown round diamond

This 3.7ct lab-grown round sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG636426679 or 636426679. Listed at 6 retailers as of October 30, 2026, with a 32% 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

3.70
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG636426679
Dimensions10.00 × 9.93 × 6.05 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.00 mm9.93 mm3.70 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG636426679
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,722 GBP|Low: £239 GBP|High: £2,657 GBP|Avg: £1,020 GBP
Rare Carat
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
October 10, 2026
Retailer 2£366 GBP
Retailer 13£369 GBP
Retailer 7£515 GBP
Retailer 10£596 GBP
Retailer 5£609 GBP
Retailer 12£658 GBP
Retailer 14£849 GBP
Retailer 9£957 GBP
Retailer 4£1,007 GBP
Retailer 6£1,119 GBP
Retailer 11£1,428 GBP
Retailer 3£1,480 GBP
Rare Carat£1,722 GBP
Retailer 8£2,657 GBP

11 data points across 14 retailers

6 retailers£1,119 GBP to £1,480 GBP

Retailer 1
-
£515 GBP
$690 USD
Price last confirmed 19 days ago
Retailer 2
-
£849 GBP
ZAR 18,370 ZAR
View
Price last confirmed 65 days ago
Retailer 3
-
£957 GBP
$1,282 USD
View
Price last confirmed 44 days ago
B+
Retailer 4
-
£1,119 GBP
CA$2,082 CAD
View
B
Retailer 5
-
£1,480 GBP
$1,983 USD
View
Most Expensive
Rare Carat
636426679 · Jul 27
£1,722 GBP
$2,308 USD
View
Price last confirmed 95 days ago
5 more retailers have this diamond
Prices start from £1,119 GBPSave up to £361 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+
3.70ct Round
£1,119 GBP