CaratHunter
Plans
Heart|Natural|GIA

0.91ct F SI1 Heart Natural Diamond

ID • F/SI1 • GIA 5516506634

Certificate GIA 5516506634

Diamond specifications and retailer prices

From £855 GBP
$1,147 USD
As of November 2, 2026
Save £1,426 GBP (63%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £2,281 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 5516506634. Listed at 7 retailers as of November 2, 2026, with prices from £855 to £2,281, a £1,426 spread on the same certified stone. NZ Jewellers lists it at £2,281. 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
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle37.5°
OriginNatural
Grading LabGIA
CertificateGIA 5516506634
Dimensions5.71 × 6.66 × 3.98 mm
L/W Ratio1.17
Top View
5.71 mm6.66 mm0.91 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5516506634
Side View
Table 56.0%CrownGirdle: MED-THKPavilion 37.5°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 2
Current: £2,281 GBP|Low: £855 GBP|High: £2,281 GBP|Avg: £1,404 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 3, 2026
Retailer 6£855 GBP
Retailer 7£1,068 GBP
Retailer 2£1,078 GBP
Retailer 4£1,092 GBP
Retailer 5£1,538 GBP
Retailer 8£1,614 GBP
Retailer 3£1,713 GBP
NZ Jewellers£2,281 GBP

40 data points across 8 retailers

7 retailers£855 GBP to £2,281 GBP

A
Cheapest Retailer
-
£855 GBP
$1,147 USD
B+
Retailer 2
-
£1,068 GBP
$1,433 USD
View
B+
Retailer 3
-
£1,078 GBP
View
B+
Retailer 4
-
£1,092 GBP
View
B+
Retailer 5
-
£1,538 GBP
CA$2,867 CAD
View
B
Retailer 6
-
£1,713 GBP
View
Most Expensive
B
NZ Jewellers
dabbcde9-0787-41ec-b588-687bc7d3b828 · Nov 3
£2,281 GBP
$3,061 USD
View
6 more retailers have this diamond
Prices start from £855 GBPSave up to £1,426 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
£855 GBP