CaratHunter
Plans
Heart|Natural|GIA

0.90ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 7548604479

Certificate GIA 7548604479

Diamond specifications and retailer prices

From £630 GBP
₹80,338 INR
As of November 1, 2026
Save £2,024 GBP (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,425 GBP at Moon Ocean · As of November 2, 2026
View at Moon Ocean

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 7548604479. Listed at 14 retailers as of October 31, 2026, with a 321% 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7548604479
Dimensions5.57 × 6.50 × 4.00 mm
L/W Ratio1.17
Top View
5.57 mm6.50 mm0.90 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7548604479
Side View
Table 57.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 61.5%

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: £4,425 GBP|Low: £628 GBP|High: £4,425 GBP|Avg: £1,106 GBP|-0.0%
Moon Ocean
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£630 GBP
Retailer 5£948 GBP
Retailer 4£1,242 GBP
Retailer 12£1,964 GBP
Retailer 13£2,123 GBP
Retailer 11£2,152 GBP
Retailer 10£2,239 GBP
Retailer 8£2,299 GBP
Retailer 2£2,403 GBP
Retailer 7£2,585 GBP
Retailer 3£2,653 GBP
Retailer 9£3,845 GBP
Moon Ocean£4,425 GBP

46 data points across 13 retailers

14 retailers£630 GBP to £2,653 GBP

A
Cheapest Retailer
-
£630 GBP
₹80,338 INR
B+
Retailer 2
-
£791 GBP
$1,060 USD
View
B+
Retailer 3
-
£948 GBP
$1,270 USD
View
B
Retailer 4
-
£1,242 GBP
ZAR 26,887 ZAR
View
B
Retailer 5
-
£1,964 GBP
$2,631 USD
View
C
Retailer 6
-
£2,123 GBP
$2,844 USD
View
Final sale: no returns
B
Retailer 7
-
£2,152 GBP
$2,883 USD
View
B
Retailer 8
-
£2,239 GBP
$3,000 USD
View
B
Retailer 9
-
£2,299 GBP
$3,081 USD
View
C
Retailer 10
-
£2,403 GBP
View
B
Retailer 11
-
£2,585 GBP
$3,464 USD
View
B
Retailer 12
-
£2,653 GBP
$3,555 USD
View
Retailer 13
-
£3,845 GBP
View
Price under review
Most Expensive
Moon Ocean
NVN-17D8B1F34-479 · Nov 2
£4,425 GBP
View
Price under review
13 more retailers have this diamond
Prices start from £630 GBPSave up to £2,024 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
£630 GBP