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Round|Lab Grown|IGI

1.78ct G VVS2 Round Lab Grown Diamond

EX • G/VVS2 • IGI LG818685283

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818685283

Diamond specifications and retailer prices

From $427 NZD
$240 USD
As of October 29, 2026
Save $2,030 NZD (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,457 NZD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

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 G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG818685283 or 818685283. Listed at 23 retailers as of October 28, 2026, with prices from $427 to $2,457, a $2,030 spread on the same certified stone. Brilliant Earth lists it at $2,457. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
G
Colour
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818685283
Dimensions7.71 × 7.66 × 4.78 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.71 mm7.66 mm1.78 ctG / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818685283
Side View
Table 60.0%Crown 36.1°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $2,457 NZD|Low: $411 NZD|High: $3,080 NZD|Avg: $1,250 NZD|-10.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 29, 2026
Retailer 3$427 NZD
Retailer 6$479 NZD
Retailer 9$497 NZD
Retailer 7$531 NZD
Retailer 13$716 NZD
Retailer 17$831 NZD
Retailer 12$851 NZD
Retailer 14$911 NZD
Retailer 2$999 NZD
Retailer 8$1,131 NZD
Retailer 15$1,237 NZD
Retailer 18$1,332 NZD
Retailer 10$1,706 NZD
Retailer 16$1,994 NZD
Retailer 11$2,137 NZD
Retailer 4$2,160 NZD
Retailer 5$2,354 NZD
Brilliant Earth$2,457 NZD

42 data points across 18 retailers

23 retailers$427 NZD to $2,457 NZD

A
Cheapest Retailer
-
$427 NZD
$240 USD
A
Retailer 2
-
$479 NZD
$269 USD
View
Final sale: no returns
A
Retailer 3
-
$497 NZD
$279 USD
View
A
Retailer 4
-
$531 NZD
$298 USD
View
A
Retailer 5
-
$531 NZD
$298 USD
View
B+
Retailer 6
-
$716 NZD
$402 USD
View
A
Retailer 7
-
$831 NZD
£368 GBP
View
Price last confirmed 12 days ago
A
Retailer 8
-
$851 NZD
€455 EUR
View
A
Retailer 9
-
$911 NZD
ZAR 8,270 ZAR
View
A
Retailer 10
-
$999 NZD
£442 GBP
View
B+
Retailer 11
-
$1,102 NZD
$619 USD
View
B+
Retailer 12
-
$1,116 NZD
$627 USD
View
B+
Retailer 13
-
$1,131 NZD
$635 USD
View
B+
Retailer 14
-
$1,237 NZD
A$1,069 AUD
View
B+
Retailer 15
-
$1,332 NZD
$748 USD
View
B+
Retailer 16
-
$1,706 NZD
$958 USD
View
B
Retailer 17
-
$1,798 NZD
$1,010 USD
View
B
Retailer 18
-
$1,994 NZD
$1,120 USD
View
Price last confirmed 11 days ago
B
Retailer 19
-
$2,137 NZD
£945 GBP
View
B
Retailer 20
-
$2,160 NZD
$1,213 USD
View
B
Retailer 21
-
$2,169 NZD
$1,218 USD
View
B
Retailer 22
-
$2,354 NZD
$1,322 USD
View
Most Expensive
B
Brilliant Earth
21053173A · Oct 28
$2,457 NZD
$1,380 USD
View
22 more retailers have this diamond
Prices start from $427 NZDSave up to $2,030 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.

A
1.78ct Round
$427 NZD