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Heart|Natural|GIA

0.85ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 7542270922

Certificate GIA 7542270922

Diamond specifications and retailer prices

From £430 GBP
HK$4,500 HKD
As of November 1, 2026
Save £599 GBP (58%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,023 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.85ct natural heart diamond

This 0.85ct natural heart sits in the just-under-one-carat band, graded I 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 7542270922. Listed at 14 retailers as of November 1, 2026, with a 139% 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

0.85
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle37.9°
OriginNatural
Grading LabGIA
CertificateGIA 7542270922
Dimensions5.78 × 6.44 × 3.85 mm
L/W Ratio1.11
Girdle conditionFaceted
Top View
5.78 mm6.44 mm0.85 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7542270922
Side View
Table 58.0%CrownGirdle: STK-VTKPavilion 37.9°Culet: NoneDepth 59.8%

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: £675 GBP|Low: £430 GBP|High: £1,147 GBP|Avg: £732 GBP|-5.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 5£430 GBP
Retailer 9£519 GBP
Retailer 8£552 GBP
Retailer 7£569 GBP
Retailer 2£624 GBP
Retailer 1£675 GBP
Retailer 11£716 GBP
Retailer 3£762 GBP
Retailer 10£870 GBP
Retailer 12£917 GBP
Retailer 4£931 GBP
Retailer 6£1,029 GBP

30 data points across 12 retailers

14 retailers£430 GBP to £1,029 GBP

A
Cheapest Retailer
-
£430 GBP
HK$4,500 HKD
A
Retailer 2
-
£519 GBP
$695 USD
View
Final sale: no returns
A
Retailer 3
-
£552 GBP
$740 USD
View
A
Retailer 4
-
£569 GBP
€726 EUR
View
Retailer 5
-
£624 GBP
SGD 1,130 SGD
View
Price last confirmed 10 days ago
A
Retailer 6
-
£675 GBP
View
A
Retailer 7
-
£716 GBP
$960 USD
View
A
Retailer 8
-
£762 GBP
SGD 1,379 SGD
View
A
Retailer 9
-
£870 GBP
ZAR 18,834 ZAR
View
B+
Retailer 10
-
£906 GBP
A$1,868 AUD
View
Retailer 11
-
£917 GBP
$1,229 USD
View
Price last confirmed 9 days ago
Retailer 12
-
£931 GBP
A$1,918 AUD
View
Price last confirmed 29 days ago
B+
Retailer 13
-
£1,029 GBP
View
Most Expensive
NZ Jewellers
7681b851-dd8a-4608-be12-c6db9e8b3316 · Sep 25
£2,023 GBP
$2,710 USD
View
Price last confirmed 37 days ago
13 more retailers have this diamond
Prices start from £430 GBPSave up to £599 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
0.85ct Heart
£430 GBP