CaratHunter
Plans
Cushion|Lab Grown|IGI

1.71ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG492123920

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG492123920

Diamond specifications and retailer prices

From $4,314 NZD
$2,423 USD
As of October 29, 2026
2 retailers carry this diamond
Most expensive: $4,314 NZD at B2C Jewels
View at B2C Jewels

About this 1.71ct lab-grown cushion diamond

This 1.71ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG492123920 or 492123920. Listed at 2 retailers as of October 29, 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

1.71
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.9°
Pavilion angle29.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492123920
Dimensions7.17 × 6.21 × 4.23 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.17 mm6.21 mm1.71 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG492123920
Side View
Table 54.5%Crown 34.9°Girdle: VTK-ETKPavilion 29.7°Culet: NoneDepth 68.1%

Caratlytics Score

How it works →
C
Average
Compare with similar diamonds
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $4,314 NZD|Low: $247 NZD|High: $4,314 NZD|Avg: $1,305 NZD|+328.1%
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
September 23, 2026
Retailer 10$247 NZD
Retailer 7$433 NZD
Retailer 8$588 NZD
Retailer 11$634 NZD
Retailer 5$710 NZD
Retailer 4$720 NZD
Retailer 6$999 NZD
Retailer 12$1,001 NZD
Retailer 3$1,262 NZD
Retailer 9$1,961 NZD
Retailer 2$3,971 NZD
B2C Jewels$4,314 NZD

71 data points across 12 retailers

2 retailers

Retailer 1
-
$1,961 NZD
$1,101 USD
Price last confirmed 101 days ago
Most Expensive
C
B2C Jewels
20034115 · Oct 29
$4,314 NZD
$2,423 USD
View
1 more retailer has this diamond

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.

C
1.71ct Cushion
$4,314 NZD