CaratHunter
Plans
Oval|Natural|GIA

1.55ct D SI2 Oval Natural Diamond

ID • D/SI2 • GIA 2556405773

Certificate GIA 2556405773

Diamond specifications and retailer prices

From £6,292 GBP
$8,431 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: £6,292 GBP at Blue Nile
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Blue Nile

About this 1.55ct natural oval diamond

This 1.55ct natural oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556405773. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.55
Carat
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.5°
OriginNatural
Grading LabGIA
CertificateGIA 2556405773
Dimensions9.14 × 6.46 × 4.06 mm
L/W Ratio1.41
Key to symbols
Crystal, Twinning Wisp, Feather, Cloud, Needle, Indented Natural, Natural
Top View
9.14 mm6.46 mm1.55 ctD / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556405773
Side View
Table 60.0%Crown 36°Girdle: MD-VTKPavilion 40.5°Culet: NoneDepth 62.9%

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: Oct 31
Current: £6,292 GBP|Low: £4,318 GBP|High: £6,292 GBP|Avg: £4,977 GBP
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
September 26, 2026
Retailer 3£4,318 GBP
Retailer 5£4,882 GBP
Retailer 4£4,980 GBP
Retailer 2£5,637 GBP
Blue Nile£6,292 GBP

7 data points across 5 retailers

1 retailer

B+
Blue Nile
30072935 · Oct 31
£6,292 GBP
$8,431 USD
View

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+
1.55ct Oval
£6,292 GBP