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Radiant|Natural|GIA

1.70ct D I1 Radiant Natural Diamond

VG • D/I1 • GIA 1528956397

Certificate GIA 1528956397

Diamond specifications and retailer prices

From £5,082 GBP
$6,809 USD
As of October 31, 2026
Save £6,363 GBP (56%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £11,445 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.7ct natural radiant diamond

This 1.7ct natural radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and I1 clarity (included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1528956397. Listed at 10 retailers as of October 30, 2026, with prices from £5,082 to £11,445, a £6,363 spread on the same certified stone. NZ Jewellers lists it at £11,445. 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

1.70
Carat
D
Colour
I1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle45.2°
Pavilion angle57.5°
OriginNatural
Grading LabGIA
CertificateGIA 1528956397
Dimensions8.66 × 5.89 × 4.10 mm
L/W Ratio1.47
Girdle conditionFaceted
Culet sizeNone
Cert comments
Pinpoints are not shown.
Key to symbols
Crystal, Indented Natural, Natural
Top View
8.66 mm5.89 mm1.70 ctD / I1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1528956397
Side View
Table 69.0%Crown 45.2°Girdle: THK-VTKPavilion 57.5°Culet: NoneDepth 69.6%

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: Oct 31
Current: £7,477 GBP|Low: £5,082 GBP|High: £8,157 GBP|Avg: £6,691 GBP|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 2£5,082 GBP
Retailer 5£5,358 GBP
Retailer 7£6,717 GBP
Retailer 8£6,717 GBP
Retailer 6£6,941 GBP
Retailer 3£7,153 GBP
Retailer 1£7,477 GBP
Retailer 4£8,157 GBP

16 data points across 8 retailers

10 retailers£5,082 GBP to £11,445 GBP

A
Cheapest Retailer
-
£5,082 GBP
$6,809 USD
B+
Retailer 2
-
£5,358 GBP
$7,179 USD
View
B+
Retailer 3
-
£5,723 GBP
$7,668 USD
View
B+
Retailer 4
-
£6,199 GBP
$8,306 USD
View
B
Retailer 5
-
£6,717 GBP
$9,000 USD
View
B
Retailer 6
-
£6,717 GBP
$9,000 USD
View
B
Retailer 7
-
£6,941 GBP
$9,300 USD
View
B
Retailer 8
-
£7,153 GBP
$9,584 USD
View
B+
Retailer 9
-
£7,477 GBP
€9,541 EUR
View
Most Expensive
B
NZ Jewellers
bf1a819c-bc56-4b11-b6b6-94e92404df65 · Oct 30
£11,445 GBP
$15,335 USD
View
9 more retailers have this diamond
Prices start from £5,082 GBPSave up to £6,363 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
1.70ct Radiant
£5,082 GBP