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Round|Natural|GIA

1.28ct G IF Round Natural Diamond

EX • G/IF • GIA 1543750667

Certificate GIA 1543750667

Diamond specifications and retailer prices

From £5,468 GBP
As of November 4, 2026
Save £6,300 GBP (54%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £11,768 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.28ct natural round diamond

This 1.28ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 1543750667. Listed at 8 retailers as of November 4, 2026, with prices from £5,468 to £11,768, a £6,300 spread on the same certified stone. NZ Jewellers lists it at £11,768. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
G
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1543750667
Dimensions6.90 × 6.93 × 4.29 mm
L/W Ratio1.00
Star length50%
Top View
6.90 mm6.93 mm1.28 ctG / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1543750667
Side View
Table 58.0%Crown 35.5°Girdle: STK-STKPavilion 40.6°Culet: NoneDepth 62.0%

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: Nov 4
Current: £11,768 GBP|Low: £5,179 GBP|High: £11,768 GBP|Avg: £7,685 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 4, 2026
Retailer 5£5,468 GBP
Retailer 8£6,298 GBP
Retailer 4£6,495 GBP
Retailer 7£7,105 GBP
Retailer 3£7,349 GBP
Retailer 6£7,631 GBP
Retailer 2£9,779 GBP
NZ Jewellers£11,768 GBP

24 data points across 8 retailers

8 retailers£5,468 GBP to £11,768 GBP

A
Cheapest Retailer
-
£5,468 GBP
A
Retailer 2
-
£6,298 GBP
View
A
Retailer 3
-
£6,495 GBP
View
Final sale: no returns
A
Retailer 4
-
£7,105 GBP
View
A
Retailer 5
-
£7,349 GBP
View
B+
Retailer 6
-
£7,631 GBP
View
B+
Retailer 7
-
£9,779 GBP
View
Most Expensive
B
NZ Jewellers
4ea21e07-7513-4ebf-aefe-6dbced2c2072 · Nov 5
£11,768 GBP
$15,839 USD
View
7 more retailers have this diamond
Prices start from £5,468 GBPSave up to £6,300 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
1.28ct Round
£5,468 GBP