CaratHunter
Plans
Round|Lab Grown|IGI

3.10ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG720533134

Shape and cutting style on the report: Round brilliant

Certificate IGI LG720533134

Diamond specifications and retailer prices

From £289 GBP
As of November 5, 2026
Save £1,342 GBP (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,631 GBP at Rare Carat · As of November 4, 2026
View at Rare Carat

About this 3.1ct lab-grown round diamond

This 3.1ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG720533134 or 720533134. Listed at 15 retailers as of November 4, 2026, with prices from £289 to £1,631, a £1,342 spread on the same certified stone. Rare Carat lists it at £1,631. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.10
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG720533134
Dimensions9.36 × 9.40 × 5.75 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.36 mm9.40 mm3.10 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG720533134
Side View
Table 57.0%Crown 34.4°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.4%

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: Nov 5
Current: £1,631 GBP|Low: £289 GBP|High: £3,017 GBP|Avg: £886 GBP|-11.4%
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
Retailer 15
Retailer 16
November 6, 2026
Retailer 12£289 GBP
Retailer 7£324 GBP
Retailer 6£359 GBP
Retailer 16£399 GBP
Retailer 13£468 GBP
Retailer 9£476 GBP
Retailer 14£568 GBP
Retailer 4£569 GBP
Retailer 15£590 GBP
Retailer 2£642 GBP
Retailer 3£841 GBP
Retailer 11£1,006 GBP
Retailer 5£1,153 GBP
Retailer 10£1,401 GBP
Rare Carat£1,631 GBP
Retailer 8£3,017 GBP

11 data points across 16 retailers

15 retailers£289 GBP to £1,631 GBP

A
Cheapest Retailer
-
£289 GBP
A
Retailer 2
-
£324 GBP
View
A
Retailer 3
-
£359 GBP
View
A
Retailer 4
-
£399 GBP
View
A
Retailer 5
-
£468 GBP
View
A
Retailer 6
-
£476 GBP
View
Retailer 7
-
£568 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£569 GBP
View
A
Retailer 9
-
£590 GBP
View
A
Retailer 10
-
£642 GBP
View
B+
Retailer 11
-
£841 GBP
View
B+
Retailer 12
-
£1,006 GBP
View
B+
Retailer 13
-
£1,153 GBP
View
B
Retailer 14
-
£1,401 GBP
View
Most Expensive
B
Rare Carat
KI1345331KF720 · Nov 4
£1,631 GBP
$2,195 USD
View
14 more retailers have this diamond
Prices start from £289 GBPSave up to £1,342 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
3.10ct Round
£289 GBP