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Heart|Natural|GIA

0.91ct E SI2 Heart Natural Diamond

EX • E/SI2 • GIA 2537718927

Certificate GIA 2537718927

Diamond specifications and retailer prices

From £740 GBP
$986 USD
As of October 28, 2026
Save £1,349 GBP (65%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,089 GBP at Moon Ocean · As of October 29, 2026
View at Moon Ocean

About this 0.91ct natural heart diamond

This 0.91ct natural heart sits in the just-under-one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2537718927. Listed at 12 retailers as of October 28, 2026, with prices from £740 to £2,089, a £1,349 spread on the same certified stone. Moon Ocean lists it at £2,089. 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
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle39.32°
Pavilion angle39.29°
OriginNatural
Grading LabGIA
CertificateGIA 2537718927
Dimensions5.79 × 6.60 × 3.92 mm
L/W Ratio1.14
Top View
5.79 mm6.60 mm0.91 ctE / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2537718927
Side View
Table 56.0%Crown 39.32°Girdle: STK-ETKPavilion 39.29°Culet: NoneDepth 59.4%

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: Oct 28
Current: £2,089 GBP|Low: £703 GBP|High: £2,181 GBP|Avg: £1,128 GBP|-3.8%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 9£740 GBP
Retailer 11£768 GBP
Retailer 5£803 GBP
Retailer 7£803 GBP
Retailer 6£834 GBP
Retailer 10£924 GBP
Retailer 12£938 GBP
Retailer 2£944 GBP
Retailer 4£960 GBP
Retailer 8£1,478 GBP
Retailer 3£1,958 GBP
Moon Ocean£2,089 GBP

42 data points across 12 retailers

12 retailers£740 GBP to £2,089 GBP

A
Cheapest Retailer
-
£740 GBP
$986 USD
Final sale: no returns
A
Retailer 2
-
£768 GBP
$1,023 USD
View
A
Retailer 3
-
£803 GBP
$1,069 USD
View
A
Retailer 4
-
£803 GBP
$1,069 USD
View
A
Retailer 5
-
£834 GBP
$1,110 USD
View
A
Retailer 6
-
£924 GBP
$1,230 USD
View
A
Retailer 7
-
£938 GBP
View
A
Retailer 8
-
£944 GBP
View
A
Retailer 9
-
£960 GBP
$1,278 USD
View
B+
Retailer 10
-
£1,478 GBP
View
B
Retailer 11
-
£1,958 GBP
$2,607 USD
View
Most Expensive
B
Moon Ocean
NVN-6C8419425-927 · Oct 29
£2,089 GBP
View
11 more retailers have this diamond
Prices start from £740 GBPSave up to £1,349 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
£740 GBP