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Heart|Natural|GIA

0.90ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 2254237464

Certificate GIA 2254237464

Diamond specifications and retailer prices

From £870 GBP
As of November 6, 2026
Save £1,057 GBP (55%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,926 GBP at Moon Ocean · As of November 6, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2254237464. Listed at 10 retailers as of November 6, 2026, with prices from £870 to £1,926, a £1,057 spread on the same certified stone. Moon Ocean lists it at £1,926. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2254237464
Dimensions5.86 × 4.88 × 3.53 mm
L/W Ratio1.20
Top View
5.86 mm4.88 mm0.90 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2254237464
Side View
Table 60.0%CrownGirdle: ThickPavilionCulet: NoneDepth 72.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,926 GBP|Low: £861 GBP|High: £1,962 GBP|Avg: £1,337 GBP|-1.8%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 6£870 GBP
Retailer 7£1,087 GBP
Retailer 8£1,107 GBP
Retailer 2£1,135 GBP
Retailer 3£1,396 GBP
Retailer 4£1,474 GBP
Retailer 5£1,839 GBP
Moon Ocean£1,926 GBP

31 data points across 8 retailers

10 retailers£870 GBP to £1,926 GBP

B+
Cheapest Retailer
-
£870 GBP
B+
Retailer 2
-
£932 GBP
View
B
Retailer 3
-
£1,068 GBP
View
B
Retailer 4
-
£1,087 GBP
View
B
Retailer 5
-
£1,107 GBP
View
B
Retailer 6
-
£1,135 GBP
View
B
Retailer 7
-
£1,396 GBP
View
B
Retailer 8
-
£1,474 GBP
View
B
Retailer 9
-
£1,839 GBP
View
Most Expensive
B
Moon Ocean
NVN-3A03D79B8-464 · Nov 6
£1,926 GBP
View
9 more retailers have this diamond
Prices start from £870 GBPSave up to £1,057 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.

B+
0.90ct Heart
£870 GBP