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Heart|Natural|GIA

0.90ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 7538877888

Certificate GIA 7538877888

Diamond specifications and retailer prices

From £610 GBP
HK$6,400 HKD
As of November 1, 2026
Save £897 GBP (60%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,329 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 H 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 7538877888. Listed at 15 retailers as of November 1, 2026, with a 147% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41.5°
OriginNatural
Grading LabGIA
CertificateGIA 7538877888
Dimensions5.86 × 6.43 × 4.11 mm
L/W Ratio1.10
Girdle conditionFaceted
Top View
5.86 mm6.43 mm0.90 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7538877888
Side View
Table 59.0%CrownGirdle: MED-VTKPavilion 41.5°Culet: NoneDepth 63.9%

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 1
Current: £1,153 GBP|Low: £610 GBP|High: £1,675 GBP|Avg: £1,005 GBP|-8.3%
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
November 2, 2026
Retailer 7£610 GBP
Retailer 11£759 GBP
Retailer 9£790 GBP
Retailer 6£834 GBP
Retailer 10£835 GBP
Retailer 2£837 GBP
Retailer 4£874 GBP
Retailer 13£950 GBP
Retailer 5£1,061 GBP
Retailer 1£1,153 GBP
Retailer 12£1,246 GBP
Retailer 3£1,315 GBP
Retailer 8£1,508 GBP

26 data points across 13 retailers

15 retailers£610 GBP to £1,508 GBP

A
Cheapest Retailer
-
£610 GBP
HK$6,400 HKD
A
Retailer 2
-
£759 GBP
$1,019 USD
View
Final sale: no returns
A
Retailer 3
-
£790 GBP
€1,009 EUR
View
A
Retailer 4
-
£834 GBP
View
A
Retailer 5
-
£835 GBP
$1,120 USD
View
A
Retailer 6
-
£837 GBP
$1,123 USD
View
Retailer 7
-
£874 GBP
SGD 1,585 SGD
View
Price last confirmed 10 days ago
B+
Retailer 8
-
£950 GBP
$1,275 USD
View
B+
Retailer 9
-
£1,061 GBP
SGD 1,924 SGD
View
Retailer 10
-
£1,149 GBP
A$2,372 AUD
View
Price last confirmed 29 days ago
B+
Retailer 11
-
£1,153 GBP
€1,473 EUR
View
B+
Retailer 12
-
£1,246 GBP
ZAR 27,020 ZAR
View
Retailer 13
-
£1,315 GBP
$1,764 USD
View
Price last confirmed 9 days ago
B+
Retailer 14
-
£1,508 GBP
View
Most Expensive
NZ Jewellers
cf65b2bc-090b-4cc9-889c-dd2427bbcf8d · Sep 25
£2,329 GBP
$3,125 USD
View
Price last confirmed 38 days ago
14 more retailers have this diamond
Prices start from £610 GBPSave up to £897 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
£610 GBP