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Heart|Natural|GIA

0.90ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 6531902121

Certificate GIA 6531902121

Diamond specifications and retailer prices

From £869 GBP
HK$9,100 HKD
As of October 30, 2026
Save £868 GBP (50%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,934 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.9ct natural heart diamond

This 0.9ct natural heart sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6531902121. Listed at 15 retailers as of October 23, 2026, with a 100% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.90
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle37.9°
OriginNatural
Grading LabGIA
CertificateGIA 6531902121
Dimensions5.68 × 6.64 × 3.96 mm
L/W Ratio1.17
Top View
5.68 mm6.64 mm0.90 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531902121
Side View
Table 58.0%CrownGirdle: MED-THKPavilion 37.9°Culet: NoneDepth 59.6%

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: Oct 30
Current: £1,130 GBP|Low: £841 GBP|High: £2,110 GBP|Avg: £1,326 GBP|-11.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 8£869 GBP
Retailer 6£1,051 GBP
Retailer 12£1,057 GBP
Retailer 7£1,065 GBP
Retailer 1£1,130 GBP
Retailer 10£1,157 GBP
Retailer 2£1,213 GBP
Retailer 11£1,214 GBP
Retailer 13£1,311 GBP
Retailer 4£1,495 GBP
Retailer 5£1,621 GBP
Retailer 9£1,738 GBP
Retailer 3£2,026 GBP

34 data points across 13 retailers

15 retailers£869 GBP to £1,738 GBP

A
Cheapest Retailer
-
£869 GBP
HK$9,100 HKD
A
Retailer 2
-
£1,051 GBP
€1,341 EUR
View
A
Retailer 3
-
£1,057 GBP
$1,416 USD
View
Final sale: no returns
A
Retailer 4
-
£1,065 GBP
$1,427 USD
View
A
Retailer 5
-
£1,067 GBP
$1,429 USD
View
A
Retailer 6
-
£1,130 GBP
View
B+
Retailer 7
-
£1,157 GBP
$1,550 USD
View
Retailer 8
-
£1,214 GBP
SGD 2,199 SGD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
£1,311 GBP
SGD 2,374 SGD
View
B+
Retailer 10
-
£1,469 GBP
A$3,028 AUD
View
Retailer 11
-
£1,495 GBP
A$3,082 AUD
View
Price last confirmed 24 days ago
Retailer 12
-
£1,621 GBP
ZAR 35,084 ZAR
View
Price last confirmed 26 days ago
B+
Retailer 13
-
£1,738 GBP
$2,328 USD
View
Retailer 14
-
£2,026 GBP
View
Price last confirmed 22 days ago
Most Expensive
NZ Jewellers
73da8a21-f709-44d2-ae13-d586207141f0 · Sep 25
£2,934 GBP
$3,931 USD
View
Price last confirmed 35 days ago
14 more retailers have this diamond
Prices start from £869 GBPSave up to £868 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
0.90ct Heart
£869 GBP