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Heart|Natural|GIA

1.51ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 7558653440

Certificate GIA 7558653440

Diamond specifications and retailer prices

From £1,800 GBP
As of November 6, 2026
Save £676 GBP (27%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £2,476 GBP at GemTrove · As of November 6, 2026
View at GemTrove

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7558653440. Listed at 5 retailers as of November 6, 2026, with prices from £1,800 to £2,476, a £676 spread on the same certified stone. GemTrove lists it at £2,476. 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

1.51
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7558653440
Dimensions6.73 × 8.00 × 4.71 mm
L/W Ratio1.19
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
6.73 mm8.00 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7558653440
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 58.9%

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 6
Current: £2,476 GBP|Low: £1,602 GBP|High: £2,476 GBP|Avg: £2,044 GBP
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4£1,800 GBP
Retailer 6£1,807 GBP
Retailer 3£1,822 GBP
Retailer 2£1,934 GBP
Retailer 5£2,087 GBP
GemTrove£2,476 GBP

41 data points across 6 retailers

5 retailers£1,800 GBP to £2,476 GBP

A
Cheapest Retailer
-
£1,800 GBP
A
Retailer 2
-
£1,822 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,934 GBP
View
A
Retailer 4
-
£2,087 GBP
View
Most Expensive
B+
GemTrove
GT-N-01269486-98 · Nov 6
£2,476 GBP
A$5,098 AUD
View
4 more retailers have this diamond
Prices start from £1,800 GBPSave up to £676 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
1.51ct Heart
£1,800 GBP