CaratHunter
Plans
Cushion|Natural|GIA

1.80ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 2426704822

Certificate GIA 2426704822

Diamond specifications and retailer prices

From $8,973 NZD
As of November 5, 2026
Save $1,019 NZD (10%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $9,991 NZD at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.8ct natural cushion diamond

This 1.8ct natural cushion sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2426704822. Listed at 2 retailers as of November 5, 2026, with a relatively tight 11% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.80
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2426704822
Dimensions6.78 × 6.42 × 4.83 mm
L/W Ratio1.06
Top View
6.78 mm6.42 mm1.80 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2426704822
Side View
Table 59.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 75.2%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $8,973 NZD|Low: $8,973 NZD|High: $10,099 NZD|Avg: $9,670 NZD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Yorxs
November 6, 2026
Retailer 1$8,973 NZD
Retailer 2$9,721 NZD
Retailer 3$9,855 NZD
Yorxs$9,991 NZD

18 data points across 4 retailers

2 retailers$8,973 NZD to $9,991 NZD

B
Cheapest Retailer
-
$8,973 NZD
Most Expensive
B
Yorxs
227993512 · Nov 6
$9,991 NZD
€5,275 EUR
View
1 more retailer has this diamond
Prices start from $8,973 NZDSave up to $1,019 NZD

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
1.80ct Cushion
$8,973 NZD