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Round|Natural|GIA

1.51ct D IF Round Natural Diamond

VG • D/IF • GIA 1126188694

Certificate GIA 1126188694

Diamond specifications and retailer prices

From £18,939 GBP
As of November 2, 2026
Save £10,021 GBP (35%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £28,960 GBP at Diamond Quarter · As of November 3, 2026
View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by GIA 1126188694. Listed at 11 retailers as of November 2, 2026, with prices from £18,939 to £28,960, a £10,021 spread on the same certified stone. Diamond Quarter lists it at £28,960. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
Crown angle31.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1126188694
Dimensions7.43 × 7.40 × 4.49 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Culet sizeNone
Top View
7.43 mm7.40 mm1.51 ctD / IF
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 1126188694
Side View
Table 57.0%Crown 31.5°Girdle: STK-STKPavilion 41°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £21,597 GBP|Low: £18,605 GBP|High: £25,960 GBP|Avg: £21,786 GBP|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 4, 2026
Retailer 4£18,939 GBP
Retailer 2£19,353 GBP
Retailer 1£21,597 GBP
Retailer 5£22,240 GBP
Retailer 6£22,434 GBP
Retailer 3£25,844 GBP

39 data points across 6 retailers

11 retailers£18,939 GBP to £28,960 GBP

B+
Cheapest Retailer
-
£18,939 GBP
B+
Retailer 2
-
£19,353 GBP
View
B
Retailer 3
-
£20,505 GBP
View
B
Retailer 4
-
£20,926 GBP
View
B+
Retailer 5
-
£21,597 GBP
View
B+
Retailer 6
-
£22,240 GBP
View
B+
Retailer 7
-
£22,434 GBP
View
B
Retailer 8
-
£22,840 GBP
View
B
Retailer 9
-
£25,844 GBP
View
B
Retailer 10
-
£25,950 GBP
View
Most Expensive
B
Diamond Quarter
1.51IFD11942552N · Nov 3
£28,960 GBP
View
10 more retailers have this diamond
Prices start from £18,939 GBPSave up to £10,021 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.

B+
1.51ct Round
£18,939 GBP