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Princess|Natural|GIA

1.51ct D SI1 Princess Natural Diamond

VG • D/SI1 • GIA 6511891154

Certificate GIA 6511891154

Diamond specifications and retailer prices

From $4,187 USD
£3,297 GBP
As of October 30, 2026
Save $51 USD (1%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,238 USD at Ritani · As of October 30, 2026
View at Ritani

About this 1.51ct natural princess diamond

This 1.51ct natural princess sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6511891154. Listed at 2 retailers as of October 30, 2026, with a relatively tight 1% 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
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle48.3°
Pavilion angle56.6°
OriginNatural
Grading LabGIA
CertificateGIA 6511891154
Dimensions6.25 × 6.17 × 4.51 mm
L/W Ratio1.01
Top View
6.25 mm6.17 mm1.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6511891154
Side View
Table 72.0%Crown 48.3°Girdle: MED-THKPavilion 56.6°Culet: NoneDepth 73.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $4,187 USD|Low: $4,067 USD|High: $6,044 USD|Avg: $4,738 USD|-0.3%
Retailer 1
Retailer 2
Ritani
October 30, 2026
Retailer 2$4,067 USD
Retailer 1$4,187 USD
Ritani$4,238 USD

36 data points across 3 retailers

2 retailers$4,187 USD to $4,238 USD

A
Cheapest Retailer
-
$4,187 USD
£3,297 GBP
Most Expensive
A
Ritani
D-SPPVLNJDEZ · Oct 30
$4,238 USD
View
1 more retailer has this diamond
Prices start from $4,187 USDSave up to $51 USD

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
1.51ct Princess
$4,187 USD