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Heart|Natural|GIA

0.90ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 1559708732

Certificate GIA 1559708732

Diamond specifications and retailer prices

From £487 GBP
HK$5,100 HKD
As of November 1, 2026
Save £1,655 GBP (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,142 GBP at NZ Jewellers · As of October 30, 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 J 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 1559708732. Listed at 9 retailers as of October 30, 2026, with prices from £487 to £2,142, a £1,655 spread on the same certified stone. NZ Jewellers lists it at £2,142. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Pavilion angle39.46°
OriginNatural
Grading LabGIA
CertificateGIA 1559708732
Dimensions5.71 × 6.68 × 3.98 mm
L/W Ratio1.17
Key to symbols
Crystal, Needle, Feather
Top View
5.71 mm6.68 mm0.90 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1559708732
Side View
Table 61.0%CrownGirdle: STK-THKPavilion 39.46°Culet: NoneDepth 59.6%

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: £2,142 GBP|Low: £487 GBP|High: £2,340 GBP|Avg: £1,049 GBP|-8.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 2£487 GBP
Retailer 3£667 GBP
Retailer 7£700 GBP
Retailer 4£702 GBP
Retailer 8£709 GBP
Retailer 9£984 GBP
Retailer 5£1,253 GBP
Retailer 6£1,254 GBP
NZ Jewellers£2,142 GBP

29 data points across 9 retailers

9 retailers£487 GBP to £2,142 GBP

A
Cheapest Retailer
-
£487 GBP
HK$5,100 HKD
A
Retailer 2
-
£667 GBP
$894 USD
View
A
Retailer 3
-
£700 GBP
SGD 1,268 SGD
View
A
Retailer 4
-
£702 GBP
$941 USD
View
A
Retailer 5
-
£709 GBP
$950 USD
View
B+
Retailer 6
-
£984 GBP
A$2,028 AUD
View
B
Retailer 7
-
£1,253 GBP
View
B
Retailer 8
-
£1,254 GBP
€1,600 EUR
View
Most Expensive
B
NZ Jewellers
491ff9fc-189c-4d00-b3e5-883fe4b3dbb6 · Oct 30
£2,142 GBP
$2,870 USD
View
8 more retailers have this diamond
Prices start from £487 GBPSave up to £1,655 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
£487 GBP