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Heart|Natural|GIA

1.50ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6551557845

Certificate GIA 6551557845

Diamond specifications and retailer prices

From £2,830 GBP
As of November 6, 2026
Save £1,039 GBP (27%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,869 GBP at GemTrove · As of November 6, 2026
View at GemTrove

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two carat band, graded I 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 6551557845. Listed at 8 retailers as of November 6, 2026, with prices from £2,830 to £3,869, a £1,039 spread on the same certified stone. GemTrove lists it at £3,869. 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

1.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551557845
Dimensions6.85 × 8.05 × 4.78 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
6.85 mm8.05 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551557845
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.5%

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: £2,867 GBP|Low: £2,581 GBP|High: £3,790 GBP|Avg: £3,128 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4£2,830 GBP
Retailer 1£2,867 GBP
Retailer 3£2,903 GBP
Retailer 7£2,953 GBP
Retailer 2£3,015 GBP
Retailer 6£3,021 GBP
Retailer 5£3,361 GBP

42 data points across 7 retailers

8 retailers£2,830 GBP to £3,869 GBP

A
Cheapest Retailer
-
£2,830 GBP
A
Retailer 2
-
£2,867 GBP
View
A
Retailer 3
-
£2,903 GBP
View
Final sale: no returns
A
Retailer 4
-
£2,953 GBP
View
A
Retailer 5
-
£3,015 GBP
View
A
Retailer 6
-
£3,021 GBP
View
B+
Retailer 7
-
£3,361 GBP
View
Most Expensive
B+
GemTrove
GT-N-01269805-98 · Nov 6
£3,869 GBP
A$7,968 AUD
View
7 more retailers have this diamond
Prices start from £2,830 GBPSave up to £1,039 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
1.50ct Heart
£2,830 GBP