CaratHunter
Plans
Round|Lab Grown|IGI

3.07ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG787677657

Shape and cutting style on the report: Round brilliant

Certificate IGI LG787677657

Diamond specifications and retailer prices

From £296 GBP
As of November 5, 2026
Save £1,186 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,482 GBP at Rare Carat · As of November 4, 2026
View at Rare Carat

About this 3.07ct lab-grown round diamond

This 3.07ct 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 LG787677657 or 787677657. Listed at 11 retailers as of November 4, 2026, with prices from £296 to £1,482, a £1,186 spread on the same certified stone. Rare Carat lists it at £1,482. 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

3.07
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787677657
Dimensions9.15 × 9.22 × 5.79 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
9.15 mm9.22 mm3.07 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787677657
Side View
Table 58.0%Crown 36.4°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.9%

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: Nov 5
Current: £1,482 GBP|Low: £271 GBP|High: £1,549 GBP|Avg: £878 GBP|-4.3%
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
November 5, 2026
Retailer 8£296 GBP
Retailer 7£332 GBP
Retailer 2£487 GBP
Retailer 9£562 GBP
Retailer 4£601 GBP
Retailer 3£635 GBP
Retailer 12£982 GBP
Retailer 11£984 GBP
Retailer 6£1,181 GBP
Retailer 5£1,201 GBP
Retailer 10£1,370 GBP
Retailer 13£1,417 GBP
Rare Carat£1,482 GBP

35 data points across 13 retailers

11 retailers£296 GBP to £1,482 GBP

A
Cheapest Retailer
-
£296 GBP
A
Retailer 2
-
£332 GBP
View
A
Retailer 3
-
£487 GBP
View
Retailer 4
-
£562 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£635 GBP
View
B+
Retailer 6
-
£982 GBP
View
B
Retailer 7
-
£984 GBP
View
B
Retailer 8
-
£1,181 GBP
View
Retailer 9
-
£1,370 GBP
View
Price last confirmed 11 days ago
Retailer 10
-
£1,417 GBP
View
Price last confirmed 24 days ago
Most Expensive
B
Rare Carat
LGRD30-43920 · Nov 4
£1,482 GBP
$1,995 USD
View
10 more retailers have this diamond
Prices start from £296 GBPSave up to £1,186 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
3.07ct Round
£296 GBP