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1.51ct D IF Round Natural Diamond

VG • D/IF • GIA 16642

Certificate GIA 16642

Diamond specifications and retailer prices

From £16,211 GBP
As of November 4, 2026
Save £541 GBP (3%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £16,751 GBP at DreamStone · As of November 4, 2026
View at DreamStone

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 16642. Listed at 2 retailers as of November 4, 2026, with a relatively tight 3% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 16642
Dimensions7.20 × 7.22 mm
L/W Ratio1.00
Top View
7.20 mm7.22 mm1.51 ctD / IF
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 16642
Side View
Table 55.0%CrownGirdle: NULPavilionCulet: NoneDepth 64.0%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: £16,751 GBP|Low: £16,042 GBP|High: £19,543 GBP|Avg: £17,214 GBP|-7.0%
DreamStone
Retailer 2
October 9, 2026
Retailer 2£16,211 GBP
DreamStone£16,751 GBP

8 data points across 2 retailers

2 retailers£16,211 GBP to £16,751 GBP

B+
Cheapest Retailer
-
£16,211 GBP
Most Expensive
B+
DreamStone
6912def9c0fae81609047f7f · Nov 4
£16,751 GBP
$22,614 USD
View
1 more retailer has this diamond
Prices start from £16,211 GBPSave up to £541 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
£16,211 GBP