CaratHunter
Plans
Cushion|Natural|AGS

0.51ct D SI2 Cushion Natural Diamond

GD • D/SI2 • AGS 104091197015

Certificate AGS 104091197015

Diamond specifications and retailer prices

From £694 GBP
$930 USD
As of October 30, 2026
Save £22 GBP (3%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £716 GBP at Jared · As of October 30, 2026
View at Jared

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by AGS 104091197015. Listed at 3 retailers as of October 30, 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

0.51
Carat
D
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishIdeal
SymmetryIdeal
Fluorescence
OriginNatural
Grading LabAGS
CertificateAGS 104091197015
Dimensions4.49 × 4.44 mm
L/W Ratio1.01
Top View
4.49 mm4.44 mm0.51 ctD / SI2
OriginNatural
CutGood
PolishIdeal
SymmetryIdeal
CertificateAGS 104091197015
Side View
Table 57.9%CrownGirdle: THN-ETKPavilionCulet: NoneDepth 75.0%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £716 GBP|Low: £694 GBP|High: £791 GBP|Avg: £743 GBP|-9.4%
Jared
Retailer 2
Retailer 3
March 27, 2026
Retailer 2£694 GBP
Retailer 3£694 GBP
Jared£716 GBP

5 data points across 3 retailers

3 retailers£694 GBP to £716 GBP

B
Cheapest Retailer
-
£694 GBP
$930 USD
B
Retailer 2
-
£694 GBP
$930 USD
View
Most Expensive
B
Jared
129963651 · Oct 30
£716 GBP
$960 USD
View
2 more retailers have this diamond
Prices start from £694 GBPSave up to £22 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
0.51ct Cushion
£694 GBP