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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 $748 USD
As of November 4, 2026
Save $447 USD (37%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,195 USD 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 4, 2026, with prices from $748 to $1,195, a $447 spread on the same certified stone. GemTrove lists it at $1,195. 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
Color
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,195 USD|Low: $640 USD|High: $1,195 USD|Avg: $869 USD
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4$748 USD
Retailer 6$750 USD
Retailer 3$816 USD
Retailer 5$834 USD
Retailer 2$869 USD
GemTrove$1,195 USD

41 data points across 6 retailers

6 retailers$748 USD to $1,195 USD

A
Cheapest Retailer
-
$748 USD
Final sale: no returns
A
Retailer 2
-
$750 USD
View
A
Retailer 3
-
$816 USD
View
A
Retailer 4
-
$834 USD
View
A
Retailer 5
-
$869 USD
View
Most Expensive
B+
GemTrove
GT-N-01266864-98 · Nov 6
$1,195 USD
A$1,838 AUD
View
5 more retailers have this diamond
Prices start from $748 USDSave up to $447 USD

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
$748 USD