Heart|Lab Grown|GIA

3.37ct G SI1 Heart Lab Grown Diamond

EX • G/SI1 • GIA 2507966964

Certificate GIA 2507966964

Diamond specifications and retailer prices

From £731 GBP

As of November 6, 2026

Save £1,646 GBP (69%) vs most expensive(unlock to see where)

11 retailers carry this diamond

Most expensive: £2,377 GBP at The Diamond Guys · As of November 6, 2026

View at The Diamond Guys

About this 3.37ct lab-grown heart diamond

This 3.37ct lab-grown heart sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2507966964. Listed at 11 retailers as of November 6, 2026, with prices from £731 to £2,377, a £1,646 spread on the same certified stone. The Diamond Guys lists it at £2,377. 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

3.37

Carat

Colour

SI1

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

OriginLab Grown

Grading LabGIA

CertificateGIA 2507966964

Dimensions9.29 × 10.57 × 5.81 mm

L/W Ratio1.14

View GIA Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 2507966964

Side View

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: Nov 6

Current: £1,848 GBP|Low: £266 GBP|High: £5,307 GBP|Avg: £1,385 GBP|+24.8%

Retailer 1

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

Retailer 18

Retailer 19

Retailer 20

Retailer 21

The Diamond Guys

October 27, 2026

Retailer 3£277 GBP

Retailer 5£311 GBP

Retailer 7£344 GBP

Retailer 8£344 GBP

Retailer 9£349 GBP

Retailer 20£439 GBP

Retailer 21£456 GBP

Retailer 2£566 GBP

Retailer 17£644 GBP

Retailer 15£731 GBP

Retailer 4£861 GBP

Retailer 18£924 GBP

Retailer 12£1,219 GBP

Retailer 6£1,219 GBP

Retailer 10£1,384 GBP

Retailer 16£1,498 GBP

Retailer 1£1,848 GBP

The Diamond Guys£2,377 GBP

Retailer 19£2,458 GBP

Retailer 13£3,130 GBP

Retailer 11£4,244 GBP

Retailer 14£5,307 GBP

22 data points across 22 retailers

11 retailers£731 GBP to £2,377 GBP

Retailer 1

£277 GBP

Price last confirmed 24 days ago

Retailer 2

£344 GBP

View

Price last confirmed 25 days ago

Retailer 3

£344 GBP

View

Price last confirmed 34 days ago

Retailer 4

£349 GBP

View

Price last confirmed 38 days ago

Retailer 5

£566 GBP

View

Price last confirmed 23 days ago

B+

Retailer 6

£731 GBP

View

B+

Retailer 7

£1,219 GBP

View

Retailer 8

£1,219 GBP

View

Price last confirmed 32 days ago

Retailer 9

£1,498 GBP

View

Price last confirmed 22 days ago

Retailer 10

£1,848 GBP

View

Price last confirmed 10 days ago

Most Expensive

The Diamond Guys

1993807588 · Nov 6

£2,377 GBP

$3,181 USD

View

10 more retailers have this diamond

Prices start from £731 GBPSave up to £1,646 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.

Similar diamonds

B+

3.37ct Heart

£731 GBP