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Radiant|Natural|GIA

1.81ct I VS1 Radiant Natural Diamond

GD • I/VS1 • GIA 1553402176

Certificate GIA 1553402176

Diamond specifications and retailer prices

From £6,573 GBP
$8,807 USD
As of November 1, 2026
Save £1,143 GBP (15%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £7,716 GBP at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.81ct natural radiant diamond

This 1.81ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1553402176. Listed at 4 retailers as of October 31, 2026, with prices from £6,573 to £7,716, a £1,143 spread on the same certified stone. Blue Nile lists it at £7,716. 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

1.81
Carat
I
Colour
VS1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49.7°
Pavilion angle60.5°
OriginNatural
Grading LabGIA
CertificateGIA 1553402176
Dimensions7.99 × 5.95 × 4.19 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
7.99 mm5.95 mm1.81 ctI / VS1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553402176
Side View
Table 69.0%Crown 49.7°Girdle: THK-VTKPavilion 60.5°Culet: NoneDepth 70.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £7,716 GBP|Low: £6,573 GBP|High: £7,967 GBP|Avg: £7,036 GBP|-3.1%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 4£6,573 GBP
Retailer 2£6,670 GBP
Retailer 3£6,777 GBP
Blue Nile£7,716 GBP

39 data points across 4 retailers

4 retailers£6,573 GBP to £7,716 GBP

A
Cheapest Retailer
-
£6,573 GBP
$8,807 USD
B+
Retailer 2
-
£6,670 GBP
View
B+
Retailer 3
-
£6,777 GBP
$9,080 USD
View
Most Expensive
B+
Blue Nile
29312084 · Oct 31
£7,716 GBP
$10,339 USD
View
3 more retailers have this diamond
Prices start from £6,573 GBPSave up to £1,143 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.

A
1.81ct Radiant
£6,573 GBP