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Radiant|Natural|GIA

1.70ct D SI1 Radiant Natural Diamond

VG • D/SI1 • GIA 1216442789

Certificate GIA 1216442789

Diamond specifications and retailer prices

From £7,771 GBP
$10,412 USD
As of October 30, 2026
Save £6,051 GBP (44%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £13,822 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1216442789. Listed at 9 retailers as of October 30, 2026, with prices from £7,771 to £13,822, a £6,051 spread on the same certified stone. NZ Jewellers lists it at £13,822. 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
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1216442789
Dimensions7.55 × 6.08 × 4.06 mm
L/W Ratio1.24
Culet sizeNone
Top View
7.55 mm6.08 mm1.70 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1216442789
Side View
Table 71.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 66.9%

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 30
Current: £13,822 GBP|Low: £7,771 GBP|High: £14,512 GBP|Avg: £10,566 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 7£7,771 GBP
Retailer 11£8,293 GBP
Retailer 9£8,984 GBP
Retailer 2£9,056 GBP
Retailer 6£9,122 GBP
Retailer 8£9,391 GBP
Retailer 10£10,367 GBP
Retailer 4£10,450 GBP
Retailer 5£13,021 GBP
NZ Jewellers£13,822 GBP
Retailer 3£14,512 GBP

44 data points across 11 retailers

9 retailers£7,771 GBP to £13,822 GBP

B+
Cheapest Retailer
-
£7,771 GBP
$10,412 USD
B
Retailer 2
-
£8,984 GBP
$12,038 USD
View
B+
Retailer 3
-
£9,056 GBP
View
B
Retailer 4
-
£9,122 GBP
$12,223 USD
View
Retailer 5
-
£9,391 GBP
View
Price last confirmed 32 days ago
B
Retailer 6
-
£10,367 GBP
$13,890 USD
View
B
Retailer 7
-
£10,450 GBP
€13,335 EUR
View
B
Retailer 8
-
£13,021 GBP
View
Most Expensive
B
NZ Jewellers
cf157c36-ec14-4619-ae78-03cbb7e0c932 · Oct 30
£13,822 GBP
$18,520 USD
View
8 more retailers have this diamond
Prices start from £7,771 GBPSave up to £6,051 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+
1.70ct Radiant
£7,771 GBP