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Heart|Natural|GIA

0.91ct F SI1 Heart Natural Diamond

ID • F/SI1 • GIA 6412283975

Certificate GIA 6412283975

Diamond specifications and retailer prices

From £911 GBP
$1,223 USD
As of November 2, 2026
Save £1,518 GBP (62%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,429 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 0.91ct natural heart diamond

This 0.91ct natural heart sits in the just-under-one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6412283975. Listed at 12 retailers as of November 2, 2026, with prices from £911 to £2,429, a £1,518 spread on the same certified stone. NZ Jewellers lists it at £2,429. 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

0.91
Carat
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6412283975
Dimensions5.59 × 6.55 × 4.23 mm
L/W Ratio1.17
Top View
5.59 mm6.55 mm0.91 ctF / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6412283975
Side View
Table 58.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 64.6%

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 2
Current: £2,429 GBP|Low: £911 GBP|High: £2,429 GBP|Avg: £1,303 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 10£911 GBP
Retailer 6£1,022 GBP
Retailer 3£1,088 GBP
Retailer 9£1,088 GBP
Retailer 11£1,125 GBP
Retailer 2£1,139 GBP
Retailer 8£1,139 GBP
Retailer 7£1,201 GBP
Retailer 5£1,366 GBP
Retailer 4£1,825 GBP
NZ Jewellers£2,429 GBP

40 data points across 11 retailers

12 retailers£911 GBP to £2,429 GBP

A
Cheapest Retailer
-
£911 GBP
$1,223 USD
B+
Retailer 2
-
£1,022 GBP
$1,372 USD
View
B+
Retailer 3
-
£1,088 GBP
$1,460 USD
View
B+
Retailer 4
-
£1,088 GBP
$1,460 USD
View
B+
Retailer 5
-
£1,125 GBP
$1,510 USD
View
B+
Retailer 6
-
£1,139 GBP
View
B+
Retailer 7
-
£1,139 GBP
$1,529 USD
View
Retailer 8
-
£1,201 GBP
View
Price last confirmed 37 days ago
B+
Retailer 9
-
£1,366 GBP
CA$2,547 CAD
View
B
Retailer 10
-
£1,641 GBP
CA$3,058 CAD
View
B
Retailer 11
-
£1,825 GBP
View
Most Expensive
B
NZ Jewellers
0b511d34-f01f-47c8-a762-6bc8371bfb2c · Nov 3
£2,429 GBP
$3,260 USD
View
11 more retailers have this diamond
Prices start from £911 GBPSave up to £1,518 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
0.91ct Heart
£911 GBP