Cushion|Natural|GIA

1.70ct J SI2 Cushion Natural Diamond

VG • J/SI2 • GIA 1547814919

Certificate GIA 1547814919

Diamond specifications and retailer prices

From £1,478 GBP

SGD 2,676 SGD

As of October 24, 2026

8 retailers carry this diamond

Most expensive: £2,877 GBP at Helzberg Diamonds · As of October 23, 2026

View at Helzberg Diamonds

About this 1.7ct natural cushion diamond

This 1.7ct natural cushion sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1547814919. Listed at 8 retailers as of October 23, 2026. 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

Colour

SI2

Clarity

Very Good

Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good

PolishExcellent

SymmetryExcellent

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 1547814919

Dimensions7.42 × 6.45 × 4.50 mm

L/W Ratio1.15

Culet sizeNone

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutVery Good

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 1547814919

Side View

Caratlytics Score

No score right now

No retailer has confirmed this stone recently, so we are not scoring it. Prices below are as of the date shown.

Price History

Last verified: Oct 24

Current: £2,877 GBP|Low: £1,478 GBP|High: £3,150 GBP|Avg: £2,202 GBP|-5.7%

Helzberg Diamonds

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

October 24, 2026

Retailer 4£1,478 GBP

Retailer 2£1,591 GBP

Retailer 6£1,605 GBP

Retailer 11£1,748 GBP

Retailer 7£1,901 GBP

Retailer 9£1,903 GBP

Retailer 10£2,010 GBP

Retailer 5£2,265 GBP

Retailer 3£2,363 GBP

Retailer 8£2,761 GBP

Helzberg Diamonds£2,877 GBP

30 data points across 11 retailers