Round|Natural|GIA

1.25ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6552572356

Certificate GIA 6552572356

Diamond specifications and retailer prices

From £2,051 GBP
As of November 6, 2026
Save £2,283 GBP (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £4,527 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.25ct natural round diamond

This 1.25ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552572356. Listed at 20 retailers as of November 4, 2026, with a 111% 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

1.25
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552572356
Dimensions6.81 × 6.85 × 4.27 mm
L/W Ratio1.01
Girdle conditionSlightly Thick to Slightly Thick
Key to symbols
Twinning Wisp, Feather, Needle
Top View
6.81 mm6.85 mm1.25 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552572356
Side View
Table 58.0%Crown 36°Girdle: STK-STKPavilion 40.8°Culet: NoneDepth 62.6%

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 6
Current: £2,699 GBP|Low: £1,952 GBP|High: £4,530 GBP|Avg: £2,626 GBP|+0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£2,051 GBP
Retailer 5£2,071 GBP
Retailer 7£2,129 GBP
Retailer 6£2,173 GBP
Retailer 2£2,429 GBP
Retailer 9£2,583 GBP
Retailer 10£2,697 GBP
Retailer 1£2,699 GBP
Retailer 3£2,965 GBP
Retailer 4£4,334 GBP

43 data points across 10 retailers

20 retailers£2,051 GBP to £4,334 GBP

A
Cheapest Retailer
-
£2,051 GBP
A
Retailer 2
-
£2,071 GBP
View
A
Retailer 3
-
£2,129 GBP
View
A
Retailer 4
-
£2,173 GBP
View
Final sale: no returns
A
Retailer 5
-
£2,190 GBP
View
Retailer 6
-
£2,355 GBP
View
Price last confirmed 50 days ago
Retailer 7
-
£2,355 GBP
View
Price last confirmed 29 days ago
A
Retailer 8
-
£2,429 GBP
View
Retailer 9
-
£2,518 GBP
View
Price last confirmed 38 days ago
A
Retailer 10
-
£2,583 GBP
View
B+
Retailer 11
-
£2,697 GBP
View
B+
Retailer 12
-
£2,697 GBP
View
B+
Retailer 13
-
£2,699 GBP
View
Retailer 14
-
£2,716 GBP
View
Price last confirmed 48 days ago
Retailer 15
-
£2,716 GBP
View
Price last confirmed 28 days ago
B+
Retailer 16
-
£2,786 GBP
View
B+
Retailer 17
-
£2,965 GBP
View
B
Retailer 18
-
£4,334 GBP
View
Retailer 19
-
£4,527 GBP
View
Price last confirmed 48 days ago
Most Expensive
NZ Jewellers
cb690922-249a-4408-bb91-5a1185c9570f · Sep 28
£4,527 GBP
$6,093 USD
View
Price last confirmed 39 days ago
19 more retailers have this diamond
Prices start from £2,051 GBPSave up to £2,283 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
1.25ct Round
£2,051 GBP