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Round|Lab Grown|GIA

1.78ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • GIA 6472210025

Certificate GIA 6472210025

Diamond specifications and retailer prices

From $2,085 NZD
$1,171 USD
As of October 28, 2026
Save $575 NZD (22%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,660 NZD at GemTrove · As of October 29, 2026
View at GemTrove

About this 1.78ct lab-grown round diamond

This 1.78ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6472210025. Listed at 2 retailers as of October 28, 2026, with prices from $2,085 to $2,660, a $575 spread on the same certified stone. GemTrove lists it at $2,660. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.78
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 6472210025
Dimensions7.80 × 7.76 × 4.79 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.80 mm7.76 mm1.78 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6472210025
Side View
Table 57.0%Crown 35°Girdle: ThickPavilion 40.8°Culet: NoneDepth 61.6%

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 28
Current: $2,660 NZD|Low: $2,003 NZD|High: $5,377 NZD|Avg: $3,068 NZD
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
September 9, 2026
Retailer 7$2,003 NZD
Retailer 2$2,085 NZD
Retailer 5$2,243 NZD
Retailer 6$2,418 NZD
GemTrove$2,660 NZD
Retailer 4$2,799 NZD
Retailer 3$5,330 NZD

53 data points across 7 retailers

2 retailers$2,085 NZD to $2,660 NZD

B
Cheapest Retailer
-
$2,085 NZD
$1,171 USD
Most Expensive
B+
GemTrove
GT-L-01020074-98 · Oct 29
$2,660 NZD
A$2,298 AUD
View
1 more retailer has this diamond
Prices start from $2,085 NZDSave up to $575 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+
1.78ct Round
$2,085 NZD