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Heart|Natural|GIA

0.90ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 1548375752

Certificate GIA 1548375752

Diamond specifications and retailer prices

From £707 GBP
HK$7,400 HKD
As of November 1, 2026
Save £1,104 GBP (61%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,653 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 1548375752. Listed at 15 retailers as of October 29, 2026, with a 156% 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
SymmetryVery Good
FluorescenceNone
Pavilion angle36.9°
OriginNatural
Grading LabGIA
CertificateGIA 1548375752
Dimensions6.00 × 6.73 × 3.72 mm
L/W Ratio1.12
Girdle conditionFaceted
Top View
6.00 mm6.73 mm0.90 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1548375752
Side View
Table 59.0%CrownGirdle: STK-VTKPavilion 36.9°Culet: NoneDepth 55.3%

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: £970 GBP|Low: £707 GBP|High: £1,849 GBP|Avg: £1,149 GBP|-17.7%
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 6£707 GBP
Retailer 9£882 GBP
Retailer 7£897 GBP
Retailer 12£960 GBP
Retailer 1£970 GBP
Retailer 8£970 GBP
Retailer 2£1,008 GBP
Retailer 11£1,067 GBP
Retailer 4£1,193 GBP
Retailer 5£1,338 GBP
Retailer 10£1,441 GBP
Retailer 13£1,506 GBP
Retailer 3£1,811 GBP

29 data points across 13 retailers

15 retailers£707 GBP to £1,811 GBP

A
Cheapest Retailer
-
£707 GBP
HK$7,400 HKD
B+
Retailer 2
-
£882 GBP
$1,182 USD
View
Final sale: no returns
A
Retailer 3
-
£897 GBP
€1,144 EUR
View
Retailer 4
-
£960 GBP
$1,286 USD
View
Price last confirmed 11 days ago
A
Retailer 5
-
£970 GBP
View
A
Retailer 6
-
£970 GBP
$1,300 USD
View
Retailer 7
-
£1,008 GBP
SGD 1,826 SGD
View
Price last confirmed 10 days ago
B+
Retailer 8
-
£1,067 GBP
$1,430 USD
View
B+
Retailer 9
-
£1,193 GBP
SGD 2,160 SGD
View
Retailer 10
-
£1,338 GBP
A$2,758 AUD
View
Price last confirmed 27 days ago
B+
Retailer 11
-
£1,343 GBP
A$2,768 AUD
View
B+
Retailer 12
-
£1,441 GBP
ZAR 31,191 ZAR
View
Retailer 13
-
£1,506 GBP
$2,018 USD
View
Price last confirmed 9 days ago
B
Retailer 14
-
£1,811 GBP
View
Most Expensive
NZ Jewellers
20018853-5dd8-4632-adaa-e98983dea4b8 · Sep 25
£2,653 GBP
$3,555 USD
View
Price last confirmed 38 days ago
14 more retailers have this diamond
Prices start from £707 GBPSave up to £1,104 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
£707 GBP