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Heart|Natural|GIA

0.91ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 2557558308

Certificate GIA 2557558308

Diamond specifications and retailer prices

From £559 GBP
As of November 6, 2026
Save £334 GBP (37%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £893 GBP at GemTrove · As of November 6, 2026
View at GemTrove

About this 0.91ct natural heart diamond

This 0.91ct natural heart sits in the just-under-one-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 2557558308. Listed at 6 retailers as of November 6, 2026, with prices from £559 to £893, a £334 spread on the same certified stone. GemTrove lists it at £893. 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

0.91
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557558308
Dimensions6.19 × 6.74 × 3.80 mm
L/W Ratio1.09
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
6.19 mm6.74 mm0.91 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557558308
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 56.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £893 GBP|Low: £478 GBP|High: £893 GBP|Avg: £649 GBP
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4£559 GBP
Retailer 6£560 GBP
Retailer 3£610 GBP
Retailer 5£623 GBP
Retailer 2£649 GBP
GemTrove£893 GBP

41 data points across 6 retailers

6 retailers£559 GBP to £893 GBP

A
Cheapest Retailer
-
£559 GBP
Final sale: no returns
A
Retailer 2
-
£560 GBP
View
A
Retailer 3
-
£610 GBP
View
A
Retailer 4
-
£623 GBP
View
A
Retailer 5
-
£649 GBP
View
Most Expensive
B+
GemTrove
GT-N-01266864-98 · Nov 6
£893 GBP
A$1,838 AUD
View
5 more retailers have this diamond
Prices start from £559 GBPSave up to £334 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
0.91ct Heart
£559 GBP