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Princess|Natural|GIA

1.21ct H SI1 Princess Natural Diamond

EX • H/SI1 • GIA 6565619621

Certificate GIA 6565619621

Diamond specifications and retailer prices

From £1,784 GBP
As of October 31, 2026
Save £2,580 GBP (59%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,364 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural princess diamond

This 1.21ct natural princess sits in the classic one-carat band, graded H 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 6565619621. Listed at 17 retailers as of October 31, 2026, with prices from £1,784 to £4,364, a £2,580 spread on the same certified stone. NZ Jewellers lists it at £4,364. 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

1.21
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565619621
Dimensions5.79 × 5.55 × 4.10 mm
L/W Ratio1.04
Girdle conditionPolished
Culet sizeNone
Key to symbols
Knot, Feather, Crystal, Pinpoint, Extra Facet
Top View
5.79 mm5.55 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565619621
Side View
Table 71.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 74.0%

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: Oct 31
Current: £4,364 GBP|Low: £1,783 GBP|High: £4,364 GBP|Avg: £2,353 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 7, 2026
Retailer 13£1,784 GBP
Retailer 5£1,869 GBP
Retailer 7£1,879 GBP
Retailer 14£1,901 GBP
Retailer 10£2,025 GBP
Retailer 6£2,047 GBP
Retailer 4£2,087 GBP
Retailer 17£2,087 GBP
Retailer 3£2,167 GBP
Retailer 16£2,193 GBP
Retailer 2£2,202 GBP
Retailer 15£2,214 GBP
Retailer 8£2,380 GBP
Retailer 9£2,409 GBP
Retailer 11£2,430 GBP
Retailer 12£3,656 GBP
NZ Jewellers£4,364 GBP

22 data points across 17 retailers

17 retailers£1,784 GBP to £4,364 GBP

A
Cheapest Retailer
-
£1,784 GBP
B+
Retailer 2
-
£1,869 GBP
View
B+
Retailer 3
-
£1,879 GBP
View
B+
Retailer 4
-
£1,901 GBP
View
B+
Retailer 5
-
£2,025 GBP
View
B+
Retailer 6
-
£2,047 GBP
View
Retailer 7
-
£2,087 GBP
View
Price last confirmed 9 days ago
B+
Retailer 8
-
£2,087 GBP
View
B+
Retailer 9
-
£2,167 GBP
View
B+
Retailer 10
-
£2,193 GBP
View
B+
Retailer 11
-
£2,202 GBP
View
B+
Retailer 12
-
£2,214 GBP
View
B+
Retailer 13
-
£2,380 GBP
View
B+
Retailer 14
-
£2,409 GBP
View
B+
Retailer 15
-
£2,430 GBP
View
B
Retailer 16
-
£3,656 GBP
View
Most Expensive
B
NZ Jewellers
86b51ece-e5cb-4195-8aec-74931ef066ab · Nov 5
£4,364 GBP
$5,841 USD
View
16 more retailers have this diamond
Prices start from £1,784 GBPSave up to £2,580 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
1.21ct Princess
£1,784 GBP